Preparation of flexible polyurethane foam

Details Preparation of flexible polyurethane foam Preparation of flexible polyurethane foam

1997-07-10

2000-04-04

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264 54, B29C 4302, B29C 4402

Patent

active

060457414

ABSTRACT:
A flexible polyurethane foam is prepared by reacting a polyol with an isocyanate in the presence of water, a catalyst, a foam stabilizer and other aids. A polyol containing a hydrophilic organic acid metal salt and/or a polymer thereof is used as the polyol. The polyurethane foam is compressed to a thickness of 5 to 80% of its initial thickness. The resulting polyurethane foam has a water absorption comparable to PVA foam.

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patent: 3300558 (1967-01-01), Grant et al.
patent: 3329759 (1967-07-01), Rice
patent: 3862282 (1975-01-01), Watson
patent: 4731391 (1988-03-01), Garvey
patent: 4985467 (1991-01-01), Kelly et al.
patent: 5336695 (1994-08-01), Nass et al.
patent: 5721295 (1998-02-01), Bruggemann et al.

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